JP6558160B2 - solenoid valve - Google Patents

Description

  The disclosure in this specification relates to an electromagnetic valve used as a device for switching a flow path in a passage using oil as a working fluid.

  The electromagnetic valve disclosed in Patent Document 1 is a device that can switch a flow path through which oil as a working fluid flows. The electromagnetic valve disclosed in Patent Document 1 includes a seat valve seat member, a seat ring that engages with the seat valve seat member, a filter that is positioned upstream of the seat ring, and an upstream side of the filter. And a ring. This solenoid valve is caulked and fixed to the seat holder by caulking the inner diameter of the front end side of the seat holder with the ring, filter, seat ring, and seat valve seat member installed in order from the upstream side. Has a structure.

JP 2013-92229 A

  According to Patent Document 1, since the filter is fixed by caulking the sheet holder in a state where the filter is sandwiched between the ring and the sheet ring, it is possible to suppress deformation of the filter during the caulking process. However, the electromagnetic valve of Patent Document 1 has a problem that two parts are required to sandwich the filter.

  In view of such problems, an object of the disclosure in this specification is to provide an electromagnetic valve capable of suppressing the number of parts and deformation of a filter.

  A plurality of aspects disclosed in this specification adopt different technical means to achieve each purpose. Further, the reference numerals in parentheses described in the claims and in this section are examples showing the correspondence with the specific means described in the embodiments described later as one aspect, and limit the technical scope. is not.

One of the disclosed solenoid valves is provided in a mounting hole (52) of a passage forming member (5) in which an inflow passage (51) into which oil as a working fluid flows and an outflow passage (53) from which oil flows out are formed. A housing (2) having a distal end side cylindrical portion (2a) to be mounted and having a valve chamber (25) communicating with the inflow passage and the outflow passage inside the distal end side cylindrical portion (2a);
A ball valve (16) that selectively opens and closes an inflow valve port (11) that is housed in the valve chamber and communicates with the inflow passage , or a discharge valve port (13) that communicates with the outflow passage through the valve chamber ;
A ball guide portion (60) provided in the valve chamber and holding the ball valve coaxially with the inlet valve port and the outlet valve port, and provided with a communication port (601) communicating with the inlet valve port and the outlet valve port;
A shaft (4) for displacing the ball valve in the axial direction;
An electromagnetic solenoid (3) for driving the shaft in the axial direction;
A seat that is a part formed by having a ring portion (61) provided with an inflow valve port and a ball guide portion, which is provided upstream of the ball guide portion and the ball valve in the inside of the front end side cylindrical portion. Member (6);
A filter member (8) having a mesh part (81) provided so as to face upstream with respect to the inflow valve port and a frame part (80) provided so as to surround the periphery of the mesh part inside the distal end side cylinder part. )When,
A first caulking part (62) formed by caulking a part of the ring part in order to fix the frame part of the filter member to the sheet member;
A second caulking part (2a1) formed by caulking a part of the inner wall of the distal end side cylinder part in order to fix the ring part to which the filter member is fixed to the housing;
Is provided.

  According to this disclosure, the ring portion is swaged so that the frame portion of the filter member is integrally fixed to the sheet member, so that a structure in which the filter member is sandwiched and fixed between two members as in the prior art can be avoided. The deformation of the net part can be avoided and the number of parts can be reduced. Further, since the inner wall of the front end side cylindrical portion of the housing is partially crimped, the ring portion of the seat member is integrally fixed to the housing, so that no external force is applied to the filter member. It can be firmly fixed. Therefore, according to this disclosure, it is possible to provide an electromagnetic valve capable of suppressing the number of parts and further suppressing the deformation of the filter.

It is sectional drawing of the solenoid valve which concerns on 1st Embodiment. It is a fragmentary sectional view which expands and shows a 1st sheet member, a filter member, a ball valve, etc. about a solenoid valve of a 1st embodiment. It is a figure which shows the crimping structure at the time of seeing the inner side of a front end side cylinder part in the III direction of FIG.

(First embodiment)
The solenoid valve 1 of 1st Embodiment is demonstrated referring FIGS. 1-3. FIG. 1 shows a schematic configuration of an entire solenoid valve 1 that is mounted in, for example, an automatic transmission system of an automobile and performs oil path switching for shift control. The electromagnetic valve 1 includes a flow path control unit housed in a housing 2 and an electromagnetic solenoid unit 3 connected integrally with the flow path control unit.

  The flow path control unit is configured such that the distal end side cylinder portion 2a is fitted into a mounting hole 52 that forms a cylindrical passage inside the automatic transmission or the passage forming member 5 on the automatic transmission side, and the axial direction of the mounting hole 52 A cylindrical housing 2 is provided. An oil inflow passage 51 through which regulated oil flows is formed in the passage forming member 5, and the oil inflow passage 51 communicates with the inflow valve port 11 in a valve open state. The housing 2 has a shaft holding portion 26 located on the opposite side of the axial center direction from the distal end side cylindrical portion 2 a fitted in the mounting hole 52. The shaft holding portion 26 holds the shaft 4 so as to be displaceable in the axial direction, and is assembled to the electromagnetic solenoid portion 3 that is externally fitted.

  A filter chamber 21 is provided in the housing 2 at a position close to the tip. The filter chamber 21 is a chamber in which oil from the automatic transmission side first flows into the electromagnetic valve 1. The filter chamber 21 covers the entire cross section of the passage and filters the oil as the working fluid. Is installed. The housing 2 is provided with a discharge valve port 13 extending in the axial direction opposite to the oil inflow valve port 11 in the axial direction, and further between the inflow valve port 11 and the discharge valve port 13. An outlet 12 is provided that extends laterally to intersect the direction. The outflow port 12 is connected to an oil outflow passage 53 formed in the passage forming member 5 and leading to a transmission valve.

  The filter member 8 is a disk-shaped member located at the most upstream side of the oil flow in the distal end side cylinder portion 2a. The filter member 8 has a net 81 that is installed at a position facing the upstream with respect to the inflow valve port 11. The filter member 8 has a frame portion 80 provided over the entire circumference so as to surround the net portion 81. The net part 81 is formed by etching the center part of a disk-shaped plate material. The portion of the remaining plate material that has not been etched constitutes a frame portion 80 formed around the net portion 81. The filter member 8 may be formed by bonding, welding, or the like to the net part 81 and the frame part 80 which are separate members.

  The 2nd sheet | seat member 7 is a cyclic | annular member which has the discharge valve port 13 as a through hole which penetrates a center part to an axial center direction. The second seat member 7 is mounted so as to be inscribed in the distal end side cylinder portion 2 a at the downstream end portion of the valve chamber 25 formed inside the housing 2. The valve chamber 25 includes a space located between the inflow valve port 11 and the discharge valve port 13, and forms a chamber that communicates with the inflow valve port 11, the discharge valve port 13, and the outflow port 12. A ball valve 16 is accommodated in the valve chamber 25. The ball valve 16 exhibits a valve function of selectively opening and closing the inflow valve port 11 or the discharge valve port 13 by the operation of an electromagnetic valve 1 described later.

  A cylindrical ball guide 60 is provided in the valve chamber 25. The ball guide part 60 constitutes a part of the first sheet member 6. The ball guide portion 60 holds the ball valve 16 disposed on the inner side coaxially with the inflow valve port 11 and the discharge valve port 13. The cylindrical inner wall surface of the ball guide portion 60 guides the axial movement of the ball valve 16 in the axial direction.

  A communication port 601 that communicates with the inflow valve port 11 and the discharge valve port 13 is formed in the ball guide portion 60. The communication port 601 is an opening that penetrates the cylindrical wall of the ball guide portion 60. The ball guide unit 60 includes a plurality of communication ports 601, and the plurality of communication ports 601 are arranged at regular intervals in the circumferential direction, for example. According to this configuration, even if the ball guide portion 60 rotates in the valve chamber 25, oil can be discharged with a small flow path distance on the outlet 12 side.

  The first seat member 6 provided with the inflow valve port 11 is mounted on the upstream side of the second seat member 7 and in the range from the filter chamber 21 to the valve chamber 25. The first seat member 6 has a ring portion 61 that is located on the upstream side and in which a through hole that constitutes the inflow valve port 11 is provided in the central portion. The first sheet member 6 includes a ball guide portion 60 that protrudes in the axial direction from an end surface located on the downstream side of the ring portion 61.

  The ring part 61 is mounted in a state of being fitted into the distal end side cylinder part 2 a of the housing 2. Therefore, the ring part 61 is in a state of being in close contact with the distal end side cylinder part 2a, and the first seat member 6 is coaxially installed with respect to the discharge valve port 13 and the ball valve 16 by this fitting relationship. . With this configuration, the ball valve 16, the inflow valve port 11 and the discharge valve port 13 are installed coaxially, and the solenoid valve 1 can exhibit an appropriate centering installation function.

  The inflow valve port 11 is installed coaxially with the discharge valve port 13 of the second seat member 7 in a state in which the ring portion 61 is installed so as to be inscribed in the distal end side cylinder portion 2 a of the housing 2. In the first seat member 6, the ball valve 16 moves upstream and comes into contact with the ring portion 61, whereby the inflow valve port 11 is closed and constitutes the upstream valve seat portion. When the ball valve 16 moves downstream and comes into contact with the second seat member 7, the second seat member 7 closes the discharge valve port 13 and constitutes a downstream valve seat portion.

  The filter member 8 is integrally fixed to the ring portion 61 of the first sheet member 6 by a plurality of first caulking portions 62. As shown in FIG. 3, the plurality of first caulking portions 62 are provided around the net portion 81 so as to be arranged at equal intervals in the circumferential direction. The plurality of first caulking portions 62 are obtained by deforming a plurality of protrusions that protrude from the end surface of the ring portion 61 that contacts the frame portion 80 and are arranged in the circumferential direction by caulking. That is, the filter member 8 and the first sheet member 6 are integrated in a state where a plurality of protrusions penetrates through the hole formed in the frame portion 80, and are installed inside the distal end side cylinder portion 2a. Therefore, the ring portion 61 has a plurality of first caulking portions 62 that are arranged around the axis of the first sheet member 6 at intervals.

  Thus, in the state in which the integrated filter member 8 and the first sheet member 6 are installed at a predetermined position inside the distal end side cylindrical portion 2a, the inner wall of the distal end side cylindrical portion 2a has different inner diameter dimensions. A step portion is provided. As shown in FIGS. 2 and 3, the stepped portion is formed so that the inner diameter dimension upstream of the outer peripheral edge of the ring portion 61 is larger than the inner diameter dimension of the portion into which the ring portion 61 is fitted. Yes. In this state, it is preferable that the first caulking portion 62 and the second caulking portion 2a1 are provided so that the positions in the axial direction are equal.

  With the ring portion 61 integrated with the filter member 8 installed at such a position in the distal end side cylindrical portion 2a, the stepped portions formed on the inner wall of the distal end side cylindrical portion 2a are crimped at a plurality of locations. By this caulking step, the step portion is partially deformed to form a plurality of second caulking portions 2a1 shown in FIGS. Since the ring portion 61 is pressed down at a plurality of locations on the outer peripheral edge by the plurality of second caulking portions 2a1, the ring portion 61 is integrally fixed to the housing 2. Therefore, the inner wall of the distal end side cylinder portion 2a has a plurality of second crimping portions 2a1 arranged at intervals around the axis of the filter member 8 or the first sheet member 6.

  Further, the plurality of protrusions penetrating the frame portion 80 are rivet-swaged. By this rivet caulking step, each of the plurality of protrusions is deformed to form a plurality of first caulking portions 62 shown in FIGS. 2 and 3. Since the frame portion 80 is coupled to the ring portion 61 at a plurality of locations by the plurality of first caulking portions 62, the filter member 8 is integrally fixed to the first sheet member 6.

  In the solenoid valve 1, oil having a higher pressure than the fuel vapor flows as a working fluid. In order to suppress this oil leakage, the solenoid valve 1 includes an O-ring seal 9 attached to the outer periphery of the distal end side cylinder portion 2a. The O-ring seal 9 is an annular seal member that is fitted in a groove formed on the entire circumference of the distal end side cylinder portion 2a.

  The ball valve 16 is disposed on the rear end side of the valve chamber 25, and is displaced in the axial direction by the shaft 4 that operates in the axial direction by an electromagnetic solenoid unit 3 described later, and a ring portion around the inflow valve port 11. 61 and the second seat member 7 around the discharge valve port 13 are selectively seated. When the ball valve 16 is seated on the wall around the discharge valve port 13, the communication between the external discharge passage 15 and the oil inflow passage 51 communicating with the outside is interrupted, and the communication between the oil inflow passage 51 and the oil outflow passage 53 is disconnected. Permissible. As a result, the oil flowing through the oil inflow passage 51 passes through the inflow valve port 11, the communication port 601, and the outflow port 12 and flows down to the oil outflow passage 53.

  When the ball valve 16 is seated around the inflow valve port 11 in the ring portion 61, the communication between the oil inflow passage 51 and the oil outflow passage 53 is blocked, and the communication between the oil outflow passage 53 and the external discharge passage 15 is allowed. The Thereby, the oil from the oil outflow passage 53 passes through the outflow port 12, the communication port 601, and the discharge valve port 13 and is discharged from the external discharge passage 15 to the outside.

  The electromagnetic solenoid unit 3 disposed on the rear end side of the housing 2 includes a yoke 31, a bobbin 34, a coil 32, a mover 33, a shaft 4, a spring 45, a connector 35, and the like. The bobbin 34 is formed in a substantially cylindrical shape by a resin material and is provided inside the yoke 31. The coil 32 is wound around the outer peripheral surface of the bobbin 34. The yoke 31 is made of a magnetic material. The yoke 31 is provided coaxially with the bobbin 34 so as to support the inner peripheral side of the bobbin 34 and cover the outer peripheral side of the coil 32. The bobbin 34 is provided coaxially with the housing 2 with the portion of the housing 2 that supports the shaft 4 slidably accommodated therein. The yoke 31, the mover 33, the shaft 4, and the like are provided coaxially with the housing 2 as with the bobbin 34.

  The mover 33 is formed of a magnetic material in a cylindrical shape. The mover 33 is supported by the yoke 31 so as to be capable of reciprocating in the axial direction. In the electromagnetic solenoid unit 3, a magnetic circuit is formed by the mover 33 and the yoke 31.

  A large-diameter portion 44 of the shaft 4 is coaxially fixed to the end surface on the bottom side of the mover 33. The shaft 4 and the mover 33 are integrated and can reciprocate in the axial direction. The shaft 4 is slidably fitted into the shaft holding portion 26 via a tip portion 41 having a small diameter located concentrically with the discharge valve port 13, a tapered portion 42 located in the discharge passage 14, and a stepped portion 43. The large-diameter portion 44 is integrally provided. The discharge passage 14 is connected to an external discharge passage 15 formed on the rear end side of the housing 2. The external discharge passage 15 is a passage provided in the housing 2 on the tip side of the shaft holding portion 26 so as to extend in a direction orthogonal to the discharge passage 14.

  A spring 45 that is an example of a spring member is interposed between the stepped portion 43 and the discharge valve port 13. The spring 45 always applies a biasing force that pushes the shaft 4 toward the movable element 33. Further, the ball valve 16 disposed in the valve chamber 25 is pushed toward the mover 33 by the action of hydraulic pressure. As a result, when the electromagnetic solenoid unit 3 is not energized, the shaft 4 is urged by the spring force of the spring 45 and is pushed toward the mover 33 via the ball valve 16 by the action of hydraulic pressure. Opens the inlet valve port 11 and closes the outlet valve port 13.

  The connector 35 is molded together with the outer skin of the coil 32 and is provided so as to be located on the side of the yoke 31. The connector 35 is provided to energize the coil 32, and the internal terminal terminal 35 a is electrically connected to the coil 32. The electromagnetic solenoid unit 3 can control the current supplied to the coil 32 by electrically connecting the terminal terminal 35 a to a current control device or the like through the connector 35.

  Next, the operation of the electromagnetic valve 1 will be described. As shown in FIG. 1, the solenoid valve 1 is fixed in a state where the distal end side cylindrical portion 2 a of the housing 2 is fitted in the mounting hole 52 of the passage forming member 5 and is connected to the outlet 12 and the oil outlet passage 53. Is attached to the automatic transmission side. When the coil 32 of the electromagnetic solenoid unit 3 is not energized, the shaft 4 is urged away from the ball valve 16 by the spring force of the spring 45, and the ball valve 16 is pushed to the rear end side by hydraulic pressure. The valve 16 closes the discharge valve port 13. In this state, communication between the oil inflow passage 51 and the oil outflow passage 53 is allowed, and the oil from the oil inflow passage 51 passes through the inflow valve port 11, the communication port 601, and the outflow port 12, and the oil outflow passage 53. Spill to

  When the coil 32 is energized in this state, magnetic flux is generated in the magnetic circuit formed by the yoke 31 and the mover 33, and the mover 33 is attracted in the axial direction toward the distal end side of the housing 2, and the spring 45 is attached. The shaft 4 is moved by moving to the tip side against the force and oil pressure.

  As a result, the ball valve 16 moves to the distal end side and closes the inflow valve port 11. As a result, communication between the oil outflow passage 53 and the external discharge passage 15 is allowed, and oil from the oil outflow passage 53 passes through the outflow port 12, the communication port 601, and the discharge valve port 13 from the external discharge passage 15. It is discharged outside. In this way, the control fluid pressure in the oil outflow passage 53 can be controlled ON / OFF by turning ON / OFF the value of the current supplied to the coil 32. Thereby, the pressure, flow rate, etc. of the control liquid used for control of the controlled object can be controlled.

  Next, the effect which the electromagnetic valve 1 of 1st Embodiment brings is demonstrated. The solenoid valve 1 includes a filter member 8, a first seat member 6, a ball valve 16, and a second seat member 7 in order from the upstream of the oil inside the distal end side cylindrical portion 2a of the housing 2. The filter member 8 includes a net part 81 provided so as to face upstream with respect to the inflow valve port 11 and a frame part 80 provided so as to surround the net part 81 inside the distal end side cylinder part 2a. . The first seat member 6 is provided upstream of the ball valve 16 inside the distal end side cylinder portion 2a, and includes a ring portion 61 having an inflow valve port 11, a ball guide portion 60 that holds the ball valve 16, and Have The frame portion 80 of the filter member 8 is fixed to the first sheet member 6 by a first caulking portion 62 formed by caulking a part of the ring portion 61. The ring portion 61 to which the filter member 8 is fixed is fixed to the housing 2 by a second crimping portion 2a1 formed by crimping a part of the inner wall of the distal end side cylindrical portion 2a. Thus, in order to fix the frame part 80 of the filter member 8 to the first sheet member 6, the electromagnetic valve 1 includes the first caulking part 62 formed by caulking a part of the ring part 61. Prepare. The electromagnetic valve 1 includes a second crimped portion 2a1 formed by crimping a part of the inner wall of the distal end side cylindrical portion 2a in order to fix the ring portion 61 to which the filter member 8 is fixed to the housing 2. .

  According to this configuration, the frame portion 80 of the filter member 8 is integrally fixed to the first sheet member 6 by the caulking of the ring portion 61. For this reason, in the filter member 8, the frame portion 80 having a strength higher than that of the net portion 81 is caulked and fixed, so that deformation of the filter member 8 due to fixation can be suppressed. Therefore, according to the electromagnetic valve 1, it is possible to avoid deformation of the mesh portion 81 and reduce the number of parts without adopting a conventional structure in which the filter member 8 is sandwiched and fixed between two members. be able to.

  Furthermore, the ring portion 61 of the first sheet member 6 is integrally fixed to the housing 2 by partially crimping the inner wall of the distal end side cylindrical portion 2 a of the housing 2. For this reason, since no external force is applied to the filter member 8 itself, the first sheet member 6 can be firmly fixed by a configuration in which the filter member 8 is not easily deformed.

  Further, according to the electromagnetic valve 1, the first crimping portion 62 and the second crimping portion 2a1 are provided so that the positions in the axial direction are equal. According to this configuration, in the caulking direction illustrated in FIG. 2, the portions corresponding to the first caulking portion 62 and the second caulking portion 2 a 1 are pressed at once to fix the caulking simultaneously at two locations. Can be easily implemented. Thereby, the 1st sheet | seat member 6 which hold | maintains the ball valve 16 between the inflow valve port 11 and the discharge | emission valve port 13 and the filter member 8 can be integrally fixed with few man-hours. Therefore, the manufacturing man-hour and manufacturing cost of the solenoid valve 1 can be reduced.

  Further, the frame portion 80 of the filter member 8 is formed by rivet crimping with a plurality of protrusions protruding from the end face of the ring portion 61 contacting the frame portion 80 and arranged in the circumferential direction passing through the frame portion 80. The first caulking portion 62 is fixed to the first sheet member 6. That is, the first caulking portion 62 is obtained by rivet caulking in a state where a plurality of protrusions that protrude from the end surface of the ring portion 61 that contacts the frame portion 80 and are arranged in the circumferential direction penetrate the frame portion 80. . According to this configuration, since the caulking is performed at a plurality of points arranged in the circumferential direction in the frame part 80, the caulking force applied to the frame part 80 can be dispersed, which contributes to suppressing deformation of the frame part 80. Furthermore, according to this electromagnetic valve 1, since the external force which acts so that the frame part 80 may be deformed to the center side can be made small, it contributes also to suppressing that the net | network part 81 bends.

  The filter member 8 includes a mesh part 81 formed at the center by etching the plate material, and a frame part 80 made of a plate material left around the mesh part 81. According to this configuration, the filter member 8 including the net part 81 and the frame part 80 can be manufactured by etching the plate material. Moreover, according to this manufacture, the thin filter member 8 can be manufactured. Furthermore, although the filter member 8 is easily deformed because of the thin filter member 8, the above-described caulking structure of the electromagnetic valve 1 can provide a remarkable effect that the filter member 8 is not easily deformed.

(Other embodiments)
The disclosure of this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combination of components and elements shown in the embodiments, and various modifications can be made. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which the components and elements of the embodiment are omitted. The disclosure encompasses parts, element replacements, or combinations between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. The technical scope disclosed is indicated by the description of the claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the claims.

  In the above-described embodiment, the columnar protrusion protruding from the end face of the ring portion 61 of the first sheet member 6 is fitted into the through hole provided in the frame portion 80 of the filter member 8, and the protrusion is inserted in the fitted state. By the rivet caulking, the projecting portion is deformed and the frame portion 80 is fixed to the ring portion 61. The fixing structure of the frame part 80 and the ring part 61 is not limited to this form. For example, the protruding portion is deformed by fitting the above-described columnar protruding portion into the notch portion provided in the ring portion 61 so as to extend inward from the outer peripheral edge, and crimping the protruding portion in the fitted state. Thus, the frame portion 80 may be fixed to the ring portion 61.

  In the above-described embodiment, the ball guide portion 60 constitutes a part of the first sheet member 6, but is not limited to such a form. For example, the ball guide portion 60 itself may constitute one part, or may constitute a part of the second sheet member 7.

  In the above-described embodiment, the second sheet member 7 is a member that forms the discharge valve port 13, but is not limited to such a form. For example, the second seat member 7 may be a part of the housing 2. In this case, the discharge valve port 13 is formed in the housing 2 so as to face the inflow valve port 11 in the axial direction. Configure the passage.

  The O-ring seal 9 in the above-described embodiment is an example of a seal member, and the seal member that can be provided to the electromagnetic valve 1 is not limited to a rubber member having a circular cross section. For example, the material of the seal member may be made of an elastically deformable material other than rubber, and the cross-sectional shape thereof may be a rectangular shape.

DESCRIPTION OF SYMBOLS 2 ... Housing, 2a ... Front end side cylinder part, 2a1 ... 2nd crimping part 3 ... Electromagnetic solenoid part, 4 ... Shaft, 5 ... Passage formation member 6 ... 1st sheet member (sheet member), 8 ... Filter member DESCRIPTION OF SYMBOLS 11 ... Inflow valve port, 13 ... Discharge valve port, 16 ... Ball valve 25 ... Valve chamber, 51 ... Oil inflow passage (inflow passage)
52 ... Mounting hole, 53 ... Oil outflow passage (outflow passage)
DESCRIPTION OF SYMBOLS 60 ... Ball guide part, 61 ... Ring part 62 ... 1st crimping part, 80 ... Frame part, 81 ... Net | network part 601 ... Communication port

Claims (4)

A tip side cylinder portion (52) mounted in a mounting hole (52) of a passage forming member (5) in which an inflow passage (51) into which oil as a working fluid flows in and an outflow passage (53) through which the oil flows out are formed. 2a), a housing (2) having a valve chamber (25) communicating with the inflow passage and the outflow passage on the inner side of the distal end side cylinder portion;
A ball valve (16) that selectively opens and closes an inflow valve port (11) that is housed in the valve chamber and communicates with the inflow passage , or a discharge valve port (13) that communicates with the outflow passage through the valve chamber. )When,
A ball guide that is housed in the valve chamber and holds the ball valve coaxially with the inflow valve port and the discharge valve port, and is provided with a communication port (601) that communicates with the inflow valve port and the discharge valve port. Part (60);
A shaft (4) for displacing the ball valve in the axial direction;
An electromagnetic solenoid section (3) for driving the shaft in the axial direction;
A ring portion (61) provided in the upstream of the oil with respect to the ball guide portion and the ball valve and having the inflow valve port formed therein and the ball guide portion. A sheet member (6) which is a made part ;
Inside the distal end side cylinder part, it has a net part (81) provided so as to face the upstream with respect to the inflow valve port and a frame part (80) provided so as to surround the net part. A filter member (8);
A first crimping part (62) formed by crimping a part of the ring part in order to fix the frame part of the filter member to the sheet member;
A second caulking part (2a1) formed by caulking a part of the inner wall of the distal end side cylinder part in order to fix the ring part to which the filter member is fixed to the housing;
A solenoid valve.   2. The solenoid valve according to claim 1, wherein the first caulking portion and the second caulking portion are provided so that positions in the axial direction are equal.   The first caulking part is obtained by rivet caulking in a state where a plurality of protrusions that protrude from an end surface of the ring part that contacts the frame part and are arranged in the circumferential direction penetrate the frame part. The solenoid valve according to claim 1 or claim 2.   The said filter member is provided with the said mesh part formed in the center part by etching a board | plate material, and the said frame part formed with the board | plate material left around the said mesh part. 4. The solenoid valve according to any one of 3.

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